Q: What to do with shared terms splitting in Wordpress 4.2? I read about a possible break compatibility change in Wordpress 4.2 called "shared term splitting". 
I download the plugin from jjeaton (https://github.com/jjeaton/wp-find-shared-terms) that show you the shared terms that could affect your installation and here it is a result example.

Now, what is not really clear is what I have to do before I can safely upgrade my sites to Wordpress 4.2. Can you help me understand?
